WO2016185795A1 - Tracteur à chenilles - Google Patents

Tracteur à chenilles Download PDF

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Publication number
WO2016185795A1
WO2016185795A1 PCT/JP2016/059505 JP2016059505W WO2016185795A1 WO 2016185795 A1 WO2016185795 A1 WO 2016185795A1 JP 2016059505 W JP2016059505 W JP 2016059505W WO 2016185795 A1 WO2016185795 A1 WO 2016185795A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
frames
fixed
crawler tractor
crawler
Prior art date
Application number
PCT/JP2016/059505
Other languages
English (en)
Japanese (ja)
Inventor
藤木　勝美
Original Assignee
ヤンマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015103017A external-priority patent/JP6488530B2/ja
Priority claimed from JP2015105918A external-priority patent/JP6468514B2/ja
Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Priority to EP16796189.5A priority Critical patent/EP3299264B1/fr
Priority to CN201680017061.6A priority patent/CN107531293B/zh
Priority to US15/575,308 priority patent/US10450015B2/en
Priority to KR1020177036576A priority patent/KR102043536B1/ko
Publication of WO2016185795A1 publication Critical patent/WO2016185795A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/10—Bogies; Frames
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/082—Transmissions; Gearings; Power distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K15/067—Mounting of tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D24/00—Connections between vehicle body and vehicle frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D63/00—Motor vehicles or trailers not otherwise provided for
    • B62D63/02—Motor vehicles
    • B62D63/04—Component parts or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors

Definitions

  • This invention relates to the technique which fixes the main-body part of a tractor on a crawler type traveling device.
  • the frame configuration is designed exclusively for the crawler tractor. For this reason, for example, it has not been possible to reduce the cost by diverting the frame configuration to the frame of another tractor. Moreover, since the frame configuration of the crawler tractor disclosed in Patent Document 1 has a small number of productions, the interval between the production periods is long. For this reason, the quality is likely to vary, and there is a risk that problems due to the variation occur.
  • An object of the present invention is to provide a crawler tractor that can reduce the cost by sharing a frame configuration with a wheel tractor.
  • a crawler tractor is a crawler tractor that transmits engine power to drive wheels of a crawler type traveling device via a transmission case and a front drive axle, and a pair of main frames extending in the front-rear direction, and the crawler A pair of track frames that extend in the front-rear direction, a pair of lower frames that connect the pair of track frames and extend in the left-right direction, and the pair of A pair of beams projecting from the rear part of the track frame toward the left and right center side, and a pair of rear housings fixed to the left and right sides of the transmission case, and the rear part of the pair of main frames includes the transmission A case is fixed, and the front portions of the pair of main frames are connected via the front drive axle.
  • the pair of main frames are connected and fixed to the front part of the pair of main frames. It is connected and fixed to the pair of rear housings.
  • a pair of rear mounts are attached to the left and right sides of the rear part of the transmission case, the rear part of the cabin is fixed on the pair of rear mounts, and the fuel tank is fixed. It is preferred that
  • a front portion of the pair of main frames, the front drive axle, the lower frame, and a front dozer bracket are fixed, and a front dozer can be attached to the front dozer bracket. It is preferable that
  • the crawler tractor includes a transmission case, a pair of main frames attached to the transmission case, and a front dozer bracket attached to the pair of main frames, and a front drive axle is supported by the front dozer bracket.
  • the front drive axle is provided with a front axle case, and the front axle case is fixed to the main frame.
  • the crawler tractor further includes a pair of track frames, and the pair of track frames are fixed to the front axle case.
  • the crawler tractor according to the present invention further includes a pair of connecting brackets attached to the pair of main frames, and a pair of lower frames attached to the pair of track frames, wherein the track frame includes the pair of lower frames. It is preferable to be fixed to the pair of connection brackets via the.
  • a pair of rear housings attached to the transmission case a pair of rear beams attached to the pair of track frames
  • the pair of track frames is fixed to the pair of rear housings via the pair of rear beams.
  • the transmission case is provided with a continuously variable transmission for straight travel, the continuously variable transmission for turning is provided at the front drive axle,
  • the hydraulic pump and the hydraulic motor are arranged in series on the pump shaft, the motor shaft serving as the output shaft of the linear advance continuously variable transmission is arranged on the pump shaft, and the power of the motor shaft is
  • the crawler type traveling device is operated by being transmitted to the front drive axle via the switching device and the auxiliary transmission device.
  • the cost can be reduced by sharing the frame configuration with the wheel tractor.
  • a side view of a crawler tractor concerning an embodiment of the present invention.
  • the overall configuration of the crawler tractor 1 will be described with reference to FIGS. 1 to 6.
  • the F direction is assumed to be the forward direction.
  • one of the rear mount 35 and the fuel tank 36 is not shown for easy understanding.
  • the crawler tractor 1 has a main body (upper structure) such as the engine 3 or the cabin 4 fixed on a crawler traveling device 2 via a pair of main frames 10.
  • the engine 3 is covered with a bonnet 30.
  • the inside of the cabin 4 is configured as a cockpit, and a driver's seat 8 is arranged.
  • a steering handle 94 Around the driver's seat 8, a steering handle 94, an accelerator pedal 95, a shift lever 96, a brake pedal 97, a clutch pedal 98, a forward / reverse switching lever 99 and the like are arranged.
  • the operator can operate the crawler tractor 1 by operating the accelerator pedal 95 or the shift lever 96 while sitting on the driver's seat 8 (see FIGS. 5 and 6).
  • the pair of main frames 10 includes a pair of front frames 11 and a pair of rear frames 12.
  • the pair of front frames 11 and the pair of rear frames 12 includes a pair of plate bodies extending in the front-rear direction, and a reinforcing body that is disposed in the left-right direction and connects the pair of plate bodies. Yes.
  • a bumper 19 is connected to the front ends of the pair of front frames 11.
  • the front portions of the pair of rear frames 12 are fixed to the rear portions of the pair of front frames 11.
  • the engine 3 is fixed between the pair of front frames 11.
  • a mission case 5 is fixed between the rear portions of the pair of rear frames 12. By fixing the pair of main frames 10 and the mission case 5, a highly rigid body frame is formed.
  • a front drive axle 6 is fixed to the front and lower portions of the pair of front frames 11 in the left-right direction.
  • the crawler type traveling device 2 includes a pair of track frames 21, a pair of drive wheels 22, a pair of tension rollers 23, a plurality of idle wheels 24, a pair of guide rollers 25, a pair of crawler belts 26, It has.
  • the pair of track frames 21 extend in the front-rear direction and are disposed on both outer sides of the pair of main frames 10.
  • Each of the pair of track frames 21 is connected by a pair of lower frames 27 extending in the left-right direction.
  • the pair of drive wheels 22 is fixed to a drive shaft 28 that protrudes laterally from the left and right sides of the front drive axle 6.
  • the pair of tension rollers 23 are rotatably supported at the rear ends of the pair of tension frames 29.
  • the pair of tension frames 29 are configured to be extendable backward from the rear ends of the pair of track frames 21.
  • the plurality of idle wheels 24 are rotatably supported in front of and behind the plurality of equalizer frames 31.
  • the equalizer frame 31 is supported at the lower part of the pair of track frames 21 so as to be swingable back and forth.
  • the plurality of guide rollers 25 are rotatably supported on the front and rear intermediate portions of the pair of track frames 21.
  • the pair of crawler belts 26 is wound around a pair of drive wheels 22, a pair of tension rollers 23, a plurality of idler wheels 24, and a plurality of guide rollers 25.
  • the front ends of the pair of track frames 21 are connected to the pair of main frames via the front drive axle 6 and the pair of lower frames 27.
  • the rear portion is fixed to the transmission case 5 via a pair of rear beams 33 and a pair of rear housings 34.
  • a gear box 6a is formed at the center of the left and right (see FIG. 11), and a pair of front axle cases 6b are attached to the left and right sides of the gear box 6a.
  • the pair of front axle cases 6b are fixed to the pair of front frames 11 on the left and right center sides.
  • the front ends of the pair of track frames 21 are fixed to the rear surfaces of the outer ends of the pair of front axle cases 6b.
  • a pair of connecting brackets 32 configured in an inverted T shape in a rear view is fixed on the upper surfaces of the left and right center portions of the pair of lower frames 27.
  • the upper portions of the pair of connection brackets 32 are fixed to the rear side surfaces of the pair of front frames 11 by bolts or the like.
  • the fuselage frame and the crawler type traveling device 2 are firmly connected and fixed. Therefore, the rigidity of the crawler tractor 1 can be improved.
  • the rear ends of the pair of rear housings 34 and the pair of rear beams 33 are connected to the front ends of the pair of lower links 15 and the pair of check chains 16 that constitute the work implement mounting device 13.
  • the top link 17 of the work implement mounting device 13 is connected to the rear surface of the hydraulic case fixed to the upper surface of the mission case 5.
  • the pair of lift arms 14 protrudes rearward from the side surface of the hydraulic case.
  • the rear ends of the pair of lift arms 14 are connected to the pair of lower links 15 via lift links.
  • the pair of lift arms 14 is driven up and down by a hydraulic cylinder.
  • a pair of rear mounts 35 are fixed to the outer surfaces of the pair of rear housings 34.
  • the rear mount 35 includes a flat plate portion and a column portion.
  • the support column is fixed to the rear housing 34.
  • the support column is suspended from the left and right inner lower surfaces of the flat plate.
  • a fuel tank 36 is attached to the upper surface of the flat plate portion.
  • the fuel tank 36 is fixed by a binding belt or the like.
  • the fuel tank 36 has a shape that matches the shape of the fender of the foil-type tractor, is disposed in the fender, and the outer surface is covered with a cover.
  • the rear lower portion of the cabin 4 is fixed to the upper surface of the pair of rear mounts 35 via a pair of elastic members. That is, in the pair of rear mounts 35, the fuel tank bracket and the cabin mount are integrally formed. A front lower portion of the cabin 4 is fixed to side surfaces of the pair of rear frames 12 via a cabin bracket (not shown).
  • a pair of rear mounts 35 are provided on the left and right sides of the rear portion of the mission case 5 via a pair of rear housings 34.
  • a pair of fuel tanks 36 and a rear portion of the cabin 4 are fixed on the pair of rear mounts 35.
  • the fuel tank 36 and the mounting member for the cabin 4 are integrally configured, the number of parts can be reduced, and the cost can be reduced.
  • the arrangement of the battery 43 will be described with reference to FIGS. 1, 2, and 4.
  • the battery 43 supplies power to electrical components such as a cell motor drive, lights, indoor lighting, and a control device.
  • the battery 43 is disposed in the tank cover 37.
  • the tank cover 37 covers the fuel tank 36 disposed on the side of the control unit.
  • a pair of fenders 9 are arranged on both the left and right sides of the driver's seat 8 in the cabin 4 that covers the control unit.
  • the crawler tractor 1 Since the upper structure of the crawler tractor 1 of the present embodiment is common to the wheel tractor, the crawler tractor 1 includes a pair of fenders 9 that cover the upper part of the rear wheel of the wheel tractor.
  • a pair of fuel tanks 36 are disposed in the pair of fenders 9. The outer side surfaces of the pair of fuel tanks 36 are covered with a pair of tank covers 37.
  • a battery 43 is accommodated in one of the left and right (left or right) fenders 9.
  • the battery 43 is mounted on the battery mounting table 42.
  • the battery mounting table 42 extends forward from the front portion of the rear mount 35.
  • a supply port for replenishing fuel is provided in the front and rear center of the upper portion of the fuel tank 36.
  • the supply port is exposed by opening a lid 37 a provided at the front and rear center of the upper portion of the tank cover 37.
  • the internal space of the pair of fenders 9 can be used effectively.
  • the battery 43 since the battery 43 is arranged in the tank cover 37 in front of the fuel tank 36, the battery 43 can be maintained by opening the tank cover 37. Since the battery mounting table 42 can be configured integrally with the rear mount 35, sufficient strength can be obtained with a simple configuration. Further, since the battery 43 is not disposed in the bonnet 30, there is no obstruction in front of the radiator, and the cooling efficiency of the radiator can be improved. In addition, since the battery 43 is not disposed in the hood 30, the engine room can be made smaller, and the front view can be expanded.
  • the battery 43 may be disposed outside the cabin 4, in front of the step 41 and above the crawler belt 26.
  • the battery mounting table 42 is provided in front of the step 41 provided on the front lower side portion of the cabin 4. In this case, maintenance can be performed on the outer crawler belt 26 without opening the hood 30, and maintenance work can be easily performed.
  • the front dozer 50 is configured to be attachable to the front portion of the crawler tractor 1.
  • a pair of front dozer brackets 51 are fixed to the front side surfaces of the pair of main frames 10, the front drive axle 6, and the pair of lower frames 27. With this configuration, the front dozer 50 can be attached to the pair of front dozer brackets 51.
  • the front dozer 50 includes a pair of support frames 52, a support arm 53, a blade 54, a pair of elevating cylinders 55, a pair of angle cylinders 56, an inclination cylinder 57, and a blade attachment body 58.
  • the support frame 52 is configured in a plate shape, and the rear portion thereof is fixed to the outer end of the front dozer bracket 51 with bolts.
  • a support arm 53 configured in a substantially U shape in plan view are pivotally supported so as to be rotatable up and down.
  • a pair of elevating cylinders 55 is interposed between the front upper part of the pair of support frames 52 and both sides of the front part of the support arm 53. With such a configuration, the support arm 53 can be moved up and down by the expansion and contraction of the lifting cylinder 55.
  • the left and right center of the front end of the support arm 53 and the left and right center rear surface of the plate-like blade mounting body 58 are pivotally supported so as to be rotatable left and right.
  • a pair of angle cylinders 56 are interposed between the left and right rear portions of the support arm 53 and the left and right rear surfaces of the blade mounting body 58.
  • the blade attachment body 58 can be turned left and right by extending and contracting the pair of angle cylinders 56 in opposite directions.
  • the rear surface of the blade 54 is supported on the front surface of the blade mounting body 58 so as to be tiltable.
  • An inclined cylinder 57 is interposed between the upper left and right central portions of the blade 54 and the left and right sides of the blade attachment body 58.
  • the blade 54 can be tilted by expanding and contracting the tilt cylinder 57. With such a configuration, the blade 54 can be lifted, tilted forward and backward, and tilted up and down.
  • the configuration of the front dozer bracket 51 will be described with reference to FIGS. 7 and 8.
  • the front dozer bracket 51 is fixed to the front frame 11, the front drive axle 6 and the lower frame 27.
  • the front dozer bracket 51 includes a main frame mounting plate 51a, an axle mounting plate 51b, a lower frame mounting plate 51c, a dozer mounting plate 51d, a connecting plate 51e, a connecting plate 51f, and a reinforcing stay 51g. Yes.
  • the main frame mounting plate 51a, the axle mounting plate 51b, and the lower frame mounting plate 51c are connected and fixed by a connecting plate 51e arranged in the up and down and front and rear directions.
  • the main frame mounting plate 51a and the dozer mounting plate 51d are connected and fixed by a connecting plate 51f arranged in the horizontal left-right direction.
  • Reinforcing stays 51g are appropriately fixed to the main frame mounting plate 51a, the axle mounting plate 51b, the lower frame mounting plate 51c, the dozer mounting plate 51d, and the connecting plates 51e and 51f, respectively.
  • the front main frame mounting plate 51a of the front dozer bracket 51 and the front and rear middle portions of the connecting plate 51e are fixed to the front frame 11 by bolts.
  • the lower axle mounting plate 51b in the middle of the front dozer bracket 51 is fixed to the front drive axle 6 with bolts.
  • the lower frame mounting plate 51c at the lower rear of the front dozer bracket 51 is fixed to the pair of lower frames 27 by bolts.
  • the dozer mounting plate 51d outside the front dozer bracket 51 is fixed to the support frame 52 of the front dozer 50 by bolts.
  • the pair of front dozer brackets 51 are fixed to the front portions of the pair of main frames 10, the front drive axle 6, and the pair of lower frames 27, and the pair of front dozer brackets 51 are fixed to the pair of front dozer brackets 51.
  • the pair of front dozer brackets 51 are firmly fixed to the three bodies of the pair of main frames 10, the front drive axle 6 and the pair of lower frames 27 of the crawler type traveling device 2. Ensuring strength to withstand heavy work.
  • An input shaft 61 of the mission case 5 is connected to the rear output shaft 3a of the engine 3 via a universal joint. Power is transmitted from the rear end of the input shaft 61 to the pump shaft 64 and the PTO clutch 80 via transmission gears 62 and 63.
  • a pump / motor serial arrangement type continuously variable transmission 65 for straight travel (hereinafter referred to as a straight travel HST 65) is disposed on the pump shaft 64.
  • the straight traveling HST 65 drives the hydraulic pump 66 and constitutes the main transmission 60.
  • the rectilinear HST 65 includes a variable displacement hydraulic pump 66 and a fixed displacement hydraulic motor 67.
  • the shift lever 96 is operated to incline the swash plate of the hydraulic pump 66 to change the discharge amount in a stepless manner so that the speed can be changed.
  • the straight traveling system transmission path 79 will be described.
  • the hydraulic pump 66 and the hydraulic motor 67 are arranged in series on the same axis. Plungers (pistons) of the hydraulic pump 66 and the hydraulic motor 67 are arranged in one cylinder block.
  • the motor shaft 68 of the hydraulic motor 67 is configured in a pipe shape and is disposed on the pump shaft 64.
  • the output from the gear arranged on the motor shaft 68 can be transmitted to the first speed clutch 71, the second speed clutch 72 or the reverse clutch 73 provided on the transmission shaft 69.
  • the first speed clutch 71 and the second speed clutch 72 are automatically switched according to the speed.
  • the first speed clutch 71, the second speed clutch 72 and the reverse clutch 73 can be switched by a forward / reverse switching lever 99.
  • the first speed clutch 71, the second speed clutch 72, and the reverse clutch 73 constitute a forward / reverse switching device 70.
  • the output from the first speed clutch 71, the second speed clutch 72 or the reverse clutch 73 is transmitted to the auxiliary transmission device 74 via a transmission shaft or a transmission gear.
  • the sub-transmission device 74 can be shifted by a sub-transmission lever.
  • the output from the auxiliary transmission 74 is transmitted to the input shaft 76 of the front drive axle 6 via the universal joint 75.
  • the power from the PTO clutch 80 is changed by the PTO transmission 77 and can be transmitted to the PTO shaft 78 protruding rearward from the rear surface of the transmission case 5.
  • the PTO transmission 77 can be shifted by operating a PTO transmission lever.
  • the power from the PTO shaft 78 can be transmitted to the work implement mounted on the work implement mounting apparatus 13 via the universal joint.
  • the main transmission 60, the auxiliary transmission 74, the forward / reverse switching device 70, the PTO transmission 77, and the pair of main frames 10 are configured to be shared by the wheel tractor and the crawler tractor. That is, the transmission, excluding the differential device and the front wheel drive unit, has the same configuration for the wheel type and the crawler type, so that the parts are shared and the cost is reduced.
  • the turning system transmission path 100 will be described.
  • the front output shaft 3b of the engine 3 is input to a hydraulic pump of a continuously variable transmission 81 for turning (hereinafter referred to as turning HST 81) via a gear or the like.
  • the turning HST 81 includes a variable displacement hydraulic pump and a fixed displacement hydraulic motor, and is attached to the front surface of the front drive axle 6.
  • the movable swash plate of the hydraulic pump of the turning HST 81 is linked to the steering handle 94.
  • a motor shaft 82 of the hydraulic motor is inserted into the front drive axle 6.
  • a bevel gear 83 is fixed to the tip of the motor shaft 82.
  • the bevel gear 83 is meshed with a pair of bevel gears 84.
  • the rotation of the motor shaft 82 is transmitted as a normal rotation to one bevel gear 84 and as a reverse rotation to the other bevel gear 84 via a pair of bevel gears 84.
  • the power from the pair of bevel gears 84 can be transmitted to the carriers 86 of the left and right planetary gear mechanisms 85 that form a forced differential. That is, when the steering handle 94 is not rotating, the turning HST 81 is neutral and the motor shaft 82 is not rotated. When the steering handle 94 is rotated, the swash plate is tilted according to the rotation direction and the rotation amount, and the rotation direction and the rotation speed of the motor shaft 82 of the turning HST 81 are changed according to the tilt direction and the tilt amount.
  • the power from the input shaft 76 of the front drive axle 6 is transmitted to the differential input shaft 87 of the planetary gear mechanism 85 via a gear and a bevel gear.
  • a sun gear 88 of the planetary gear mechanism 85 is fixed to the end of the differential input shaft 87.
  • the sun gear 88 is meshed with the planetary gear 89.
  • the planetary gear 89 is rotatably supported on the carrier shaft of the carrier 86.
  • the power from the planetary gear mechanism 85 is transmitted to the drive shaft 28 via the final reduction mechanism 90 so that the drive wheels 22 can be driven.
  • the swash plate When the steering handle 94 is rotated, the swash plate is tilted according to the rotation direction and rotation angle, and the output rotation direction and the rotation speed are output to the motor shaft 82 according to the tilt of the swash plate. Then, forward rotation from the motor shaft 82 to the left and right bevel gears 84 is applied to the planetary gear mechanism 85, the drive shaft 28 is accelerated, and reverse rotation is applied to the left and right other planetary gear mechanisms 85 to drive the drive shaft. 28 is decelerated. Thus, the crawler tractor 1 is turned to the speed reduction side where the steering handle 94 is rotated. When the steering handle 94 is rotated, the main transmission 60 is decelerated according to the rotation angle so that it does not turn suddenly.
  • the left and right direction of the mission case 5 can be configured in a compact manner.
  • the forward / reverse switching device 70 is switched from forward to backward, or from backward to forward, based on an instruction from the operator. By setting it as such a structure, in the crawler tractor 1, the switching from a forward drive to a reverse drive or from a reverse drive to a forward drive is accelerated.
  • the crawler tractor 1 includes a forward / reverse switching lever 99.
  • the forward / reverse switching device 70 is switched from forward to reverse or back to forward based on the operation of the forward / reverse switching lever 99 by the operator. With such a configuration, the crawler tractor 1 can easily perform a switching operation from forward to backward, or from backward to forward.
  • the forward / reverse switching lever 99 is provided on the handle column 100 (see FIGS. 5 and 6). With such a configuration, the crawler tractor 1 can quickly and easily perform a switching operation from forward to reverse, or from reverse to forward.
  • the lubricating oil stored in the mission case 5 is used as the hydraulic oil for the straight traveling HST 65, the turning HST 81, the lifting device or the hydraulic clutch.
  • the hydraulic pumps 101, 102, and 103 are driven by the output of the rear output shaft 3a of the engine 3 through gears and the like.
  • the first speed clutch 71, the second speed clutch 72 and the reverse clutch 73 can be operated by the pressure oil discharged from the hydraulic pump 101.
  • An elevating cylinder, an inclining cylinder, or an external hydraulic device that raises and lowers the work implement by pressure oil discharged from the hydraulic pump 102 is operable.
  • the straight traveling HST 65 or the PTO clutch 80 can be operated by the pressure oil discharged from the hydraulic pump 103.
  • the hydraulic pump 104 is driven via a gear or the like by the output of the front output shaft 3b of the engine 3.
  • the hydraulic pump 104 sucks the lubricating oil in the transmission case 5 through the suction filter 91 as hydraulic oil.
  • the pressure oil discharged from the hydraulic pump 104 is supplied as charge hydraulic pressure to the closed circuit of the turning HST 81 via the line filter 92.
  • the hydraulic pump 104 is disposed at the front part of the turning HST 81 attached to the front left and right center of the gear box 6 a of the front drive axle 6.
  • the suction filter 91 is attached to the front outer side on the left and right sides of the pair of main frames 10.
  • the line filter 92 is attached to the front outer surface of the pair of main frames 10 on the left and right other sides.
  • the suction filter 91 is communicated with the side surface of the mission case 5 via the pipe 105.
  • the pipe 105 is arranged in the front-rear direction along the outer surface on the left and right sides of the pair of main frames 10.
  • the suction filter 91 is connected to the suction port of the hydraulic pump 104 via a pipe 106.
  • the discharge port of the hydraulic pump 104 is connected to the line filter 92 via a pipe 107.
  • the line filter 92 and the turning HST 81 are connected by a pipe 108.
  • the return oil of the turning HST 81 is returned to the mission case 5 through the pipe 109.
  • the pipe 109 is disposed along the outer surface of the pair of main frames 10 on the left and right other sides.
  • the front side surfaces of the pair of main frames 10 are opened to the side, so that the suction filter 91 and the line filter 92 can be arranged in a space, and maintenance is easier than the outside. it can. Further, the bumper 19 is disposed in front of the suction filter 91 and the line filter 92, and the suction filter 91 and the line filter 92 can be protected against obstacles from the front.
  • the present invention can be used for a crawler tractor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Body Structure For Vehicles (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un tracteur à chenilles qui permette une réduction des coûts en utilisant la même structure de châssis qu'un tracteur à roues. La solution selon l'invention porte sur un tracteur à chenilles dans lequel la puissance est transférée d'un moteur (3) à des roues d'entraînement (22) d'un appareil de déplacement de type à chenille (2) par l'intermédiaire d'un boîtier de transmission (5) et d'un essieu d'entraînement avant (6), ledit tracteur à chenilles étant doté d'une paire de châssis principaux (10), d'une paire de châssis à chenille (21), d'une paire de châssis inférieurs (27), d'une paire de barres arrière (33) et d'une paire de boîtiers arrière (34). Les sections avant de la paire de châssis principaux (10) sont couplées de manière fixe aux sections avant de la paire de châssis à chenille (21) par l'intermédiaire de l'essieu d'entraînement avant (6) ; les sections intermédiaires longitudinales de la paire de châssis principaux (10) sont couplé de manière fixe à la paire de bras inférieurs (27) ; et les sections arrière de la paire de châssis principaux (10) sont couplé de manière fixe à la paire de boîtiers arrière (34) par l'intermédiaire de la paire de barres arrière (33).
PCT/JP2016/059505 2015-05-20 2016-03-24 Tracteur à chenilles WO2016185795A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16796189.5A EP3299264B1 (fr) 2015-05-20 2016-03-24 Tracteur à chenilles
CN201680017061.6A CN107531293B (zh) 2015-05-20 2016-03-24 履带式拖拉机
US15/575,308 US10450015B2 (en) 2015-05-20 2016-03-24 Crawler tractor
KR1020177036576A KR102043536B1 (ko) 2015-05-20 2016-03-24 크롤러 트랙터

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015-103017 2015-05-20
JP2015103017A JP6488530B2 (ja) 2015-05-20 2015-05-20 クローラトラクタ
JP2015-105918 2015-05-25
JP2015105918A JP6468514B2 (ja) 2015-05-25 2015-05-25 クローラトラクタ

Publications (1)

Publication Number Publication Date
WO2016185795A1 true WO2016185795A1 (fr) 2016-11-24

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PCT/JP2016/059505 WO2016185795A1 (fr) 2015-05-20 2016-03-24 Tracteur à chenilles

Country Status (5)

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US (1) US10450015B2 (fr)
EP (1) EP3299264B1 (fr)
KR (1) KR102043536B1 (fr)
CN (1) CN107531293B (fr)
WO (1) WO2016185795A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10526026B2 (en) * 2017-01-27 2020-01-07 Barreto Manufacturing, Inc. Carriage for a track drive vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02143325U (fr) * 1989-05-08 1990-12-05
JP2001055161A (ja) * 1999-08-12 2001-02-27 Yanmar Diesel Engine Co Ltd クローラ式走行車両
JP2008195318A (ja) * 2007-02-15 2008-08-28 Yanmar Co Ltd クローラ式作業車両
JP2009196637A (ja) * 2009-05-29 2009-09-03 Yanmar Co Ltd トラクターローダーバックホーのフレーム構造
JP2010173602A (ja) * 2009-02-02 2010-08-12 Yanmar Co Ltd 作業車輌
JP4672886B2 (ja) * 2001-03-02 2011-04-20 ヤンマー株式会社 トラクタ
JP2012091752A (ja) * 2010-10-28 2012-05-17 Yanmar Co Ltd 作業車両

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049186A (en) * 1960-03-08 1962-08-14 Dwight A Garrett Articulating-frame logging tractor
US3226859A (en) * 1964-02-11 1966-01-04 Hough Co Frank Mounting assembly for dozer blade
JPS5974150U (ja) 1982-11-11 1984-05-19 ヤンマーディーゼル株式会社 農用トラクタ−のバツテリ−の固定構造
US4464852A (en) * 1983-07-07 1984-08-14 Deere & Company Dozer attachment for excavator
JP2572886B2 (ja) * 1990-09-12 1997-01-16 株式会社クボタ 作業車の機体フレーム構造
JP3675927B2 (ja) * 1996-02-23 2005-07-27 ヤンマー株式会社 走行車輌のフレーム構造
EP1375315B1 (fr) * 2001-04-04 2013-08-21 Yanmar Co., Ltd. Tracteur chenille
JP3686602B2 (ja) 2001-11-15 2005-08-24 セイレイ工業株式会社 作業車
JP3945698B2 (ja) * 2002-10-23 2007-07-18 ヤンマー農機株式会社 クローラ形トラクタ
JP5572519B2 (ja) * 2010-10-22 2014-08-13 ヤンマー株式会社 コンバイン
GB201109970D0 (en) * 2011-06-14 2011-07-27 Valtra Oy Ab Continuously variable power-split vehicle transmission
JP5985918B2 (ja) 2012-07-27 2016-09-06 株式会社クボタ 作業車の車体構造

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02143325U (fr) * 1989-05-08 1990-12-05
JP2001055161A (ja) * 1999-08-12 2001-02-27 Yanmar Diesel Engine Co Ltd クローラ式走行車両
JP4672886B2 (ja) * 2001-03-02 2011-04-20 ヤンマー株式会社 トラクタ
JP2008195318A (ja) * 2007-02-15 2008-08-28 Yanmar Co Ltd クローラ式作業車両
JP2010173602A (ja) * 2009-02-02 2010-08-12 Yanmar Co Ltd 作業車輌
JP2009196637A (ja) * 2009-05-29 2009-09-03 Yanmar Co Ltd トラクターローダーバックホーのフレーム構造
JP2012091752A (ja) * 2010-10-28 2012-05-17 Yanmar Co Ltd 作業車両

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3299264A4 *

Also Published As

Publication number Publication date
US20180154956A1 (en) 2018-06-07
KR102043536B1 (ko) 2019-12-02
EP3299264A1 (fr) 2018-03-28
US10450015B2 (en) 2019-10-22
CN107531293B (zh) 2020-03-06
EP3299264A4 (fr) 2018-07-04
CN107531293A (zh) 2018-01-02
EP3299264B1 (fr) 2019-10-09
KR20180008777A (ko) 2018-01-24

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